> How to Remove an IP from Blacklists (Spamhaus, Barracuda, SORBS Delisting Guide)

Getting your server or residential IP address removed from a global blacklist requires following strict operational procedures. This guide provides exact instructions for all major blocklist operators.

Spamhaus Removal Procedure

Spamhaus maintains the world's most influential blocklists (SBL, XBL, PBL, CSS). If your IP is listed:

1. Visit the Spamhaus IP Checker.
2. Review the exact list code (e.g. SBL = spam source, XBL = infected proxy/worm, PBL = residential dynamic range).
3. If listed on the PBL and running a legitimate business mail server, ensure your ISP sets an explicit PTR record before requesting removal.

Barracuda Reputation Network (BRBL)

1. Ensure outbound port 25 traffic from your network is clean and legitimate.
2. Navigate to the Barracuda Removal Request form.
3. Provide your IP, mail server reverse DNS hostname, and a detailed explanation of corrective actions taken.

UCEProtect Notice

Note on UCEProtect Level 2 / Level 3: These lists block entire ASN subnets rather than single IPs. Legitimate network administrators generally disregard Level 3 listings because of excessive false positives.